Correct Answer: SELECT COUNT(*) FROM Persons
Explanation:
Note: This Question is unanswered, help us to find answer for this one
MySQL Skill Assessment
Your Skill Level: Poor
Retake Quizzes to improve it
More MySQL MCQ Questions
Which statement is correct?
What is A in ACID?
Which clauses can be used in a SELECT statement to reduce the results to a unique list of values?
What locks can be applied to MyISAM tables?
What does the following command output: 'SELECT 1'
Which statement about the TRUNCATE TABLE statement is true?
You are loading data into a table. Which command can you use to make sure that all data is inserted and duplicates rows are discarded?
What is one reason to introduce data redundancy into a normalized database design?
In recent versions of MySQL (8.0+), what's the correct syntax to declare a CTE (Common Table Expression)?
Management has requested that you build an employee database. You need to include each employee's current position and salary, as well as all prior positions and salaries with the company. You decide to use a one-to-many structure: an employee table with the main information such as name and address, and an employment table with position and salary history. You can use the employeeID field to connect them. What is employment.employeeID an example of?